Seiko Cal. 4578 - 420

This Automatic model from 1966 features a 39mm Hardlex-Coated Steel case. Powered by the 4578 caliber with 32j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-1922f2197b2c]

Also known as: Rally, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1966

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